12015252 has 18 divisors (see below), whose sum is σ = 30371978. Its totient is φ = 4005072.

The previous prime is 12015233. The next prime is 12015257. The reversal of 12015252 is 25251021.

It can be written as a sum of positive squares in only one way, i.e., 6081156 + 5934096 = 2466^2 + 2436^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12015257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166843 + ... + 166914.

Almost surely, 2^12015252 is an apocalyptic number.

12015252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12015252 is an abundant number, since it is smaller than the sum of its proper divisors (18356726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12015252 is a wasteful number, since it uses less digits than its factorization.

12015252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333767 (or 333762 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 12015252 is about 3466.3023526519. The cubic root of 12015252 is about 229.0398028994.

Adding to 12015252 its reverse (25251021), we get a palindrome (37266273).

The spelling of 12015252 in words is "twelve million, fifteen thousand, two hundred fifty-two".